Dioscorea alata

大薯

naturalized

Dioscorea alata L.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

名彙資訊

學名發表文獻

L. 1753. Species Plantarum 2: 1033. (Sp. Pl.)

台灣首次記錄發表文獻

Hayata. 1921. Icones Plantarum Formosanarum 10: 42. (Icon. Pl. Formos.)

異名與其在台灣首次使用的文獻

Dioscorea alata L. var. purpurea (Roxb.) M. Pouch.

Liu & Huang. 1978. Flora of Taiwan 5: 101. (Fl. Taiwan)

各語言俗名

中

大薯、罐薯、田薯、紅大薯、紫田薯、條薯、紫薯
台

Chhân tsû
原

Saaku (Atayal)、Saakobarai (Atayal)、Saakomatara (Atayal)、Saakouino (Atayal)、Kakkei'zzi (Paiwan)
日

ぐんばいどころ、だいじよう

參考文獻

Yang. 1982. A list of plants in Taiwan. (List Pl. Taiwan)

特徵描述

生活型

twiner

形態特徵

Plants right-twining (dextrorse), with tubers; stems wrinkled, 4-winged or 4-angled, 3-7 mm thick, wings undulate, 1-2 mm wide, membranaceous, rarely prickly on basal part of stem.
Leaves chartaceous, glabrous, opposite, sometimes alternate on lower stem, triangular, oblong triangular or oblong ovate, 8-28 cm long, 6-16 cm wide, apex acuminate, base cordate, margin entire; nerves 7-9, veinlet finely networked; petioles winged, twisted, dilated at base, 3-5 mm thick, 7-13 cm long; bulbils axillary, persistent, 4-6 cm long, 2-3 cm wide.
Staminate flowers not seen; pistillate flowers in simple spikes, 8-14 flowered, each flower bearing 2 basal bracts.
Capsules obovoid, 1.5-1.8 cm long, 1.3-1.8 cm wide.
Some cultivated forms have young leaves purple and the petioles, skin and/or flesh of the tubers purple.

分布

台灣 : cultivated for the subterranean tubers.
世界 : India, southern Asia to the Pacific islands, tropical America, and Africa.

引證標本

TAIPEI: Huang 1798; Kuan-in-shan, Fukuyama 219; Yangmingshan, Yamamoto s. n. 1938. KAOSHIUNG: Laonong, Mori s. n. 1907. TAITUNG: Lanyu, Sasaki s. n. 1926.